nr_dlsim and nr_ulsim segmentation fault issue solved

openair2/RRC/NR/MESSAGES/asn1_msg.c

@@ -227,13 +227,18 @@ uint8_t do_MIB_NR(gNB_RRC_INST *rrc,uint32_t frame) {
   mib->message.choice.mib->spare.bits_unused = 7;  // This makes a spare of 1 bits
 
   mib->message.choice.mib->ssb_SubcarrierOffset = (carrier->ssb_SubcarrierOffset)&15;
+
   /*
   * The SIB1 will be sent in this allocation (Type0-PDCCH) : 38.213, 13-4 Table and 38.213 13-11 to 13-14 tables
   * the reverse allocation is in nr_ue_decode_mib()
   */
+  if(rrc->carrier.pdcch_ConfigSIB1) {
     mib->message.choice.mib->pdcch_ConfigSIB1.controlResourceSetZero = rrc->carrier.pdcch_ConfigSIB1->controlResourceSetZero;
     mib->message.choice.mib->pdcch_ConfigSIB1.searchSpaceZero = rrc->carrier.pdcch_ConfigSIB1->searchSpaceZero;
-
+  } else {
+    mib->message.choice.mib->pdcch_ConfigSIB1.controlResourceSetZero = *scc->downlinkConfigCommon->initialDownlinkBWP->pdcch_ConfigCommon->choice.setup->controlResourceSetZero;
+    mib->message.choice.mib->pdcch_ConfigSIB1.searchSpaceZero = *scc->downlinkConfigCommon->initialDownlinkBWP->pdcch_ConfigCommon->choice.setup->searchSpaceZero;
+  }
 
   AssertFatal(scc->ssbSubcarrierSpacing != NULL, "scc->ssbSubcarrierSpacing is null\n");
   switch (*scc->ssbSubcarrierSpacing) {